Most of my tenants have great jobs ( and are nice hardworking folks) but all have judgments, garnishments, child support or alimony and cannot get a loan. 

Ending on sort of a positive note, once a buyer has gone through the NACA paper-chase, applying for a regular mortgage seems like child's play to them.

My understanding of best practice is that (1) you want to have your LLC in the state where the property is located to avoid the foreign LLC issues and (2) you want to set a maximum value of the properties in any one of those LLC (3) Finally, by holding the child LLCs inside a holding or series LLC you can shield the assets so only the LLC the property involved in the lawsuit is at risk. 

I can go on for days with reasons, but the main perk for us RE investors is that you can easily incorporate new assets into the structure and ensure they're totally protected within their own child Series.

If I travel from far away, have sick child, or any inconvenient hand dealt in that trip, you would be my hero, and I’m very likely to be a repeat client.

Later, in the early 1900’s, through child labor laws, anti-trust legislation and other regulations they recognized that allowing the richest minority to unfairly and unduly exploit the majority of the people is un-American. 

Almost every person that came to the door was a senior citizen or a child.

It's a pretty big "why"...holding your own child and seeing your future and legacy in your arms. 

What I wasn't listening to was my Jiminy Cricket in my hear saying "bud you're going to have you first child and are starting your dream job you expect me to believe that you devote the time needed to make the 20K/month in passive income that the speaker is talking about in this very small specialty market of investing".As I have matured as an investor, I have realized that nothing comes without hard work in this game. 

There could be very undesirable people such as child molesters or convicted felons staying on your property so I would at least want them to not have access to the part of the house my family stayed in.